Docker Basics

# Dockerfile
FROM node:20-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci

FROM node:20-alpine AS builder
WORKDIR /app
COPY . .
COPY --from=deps /app/node_modules ./node_modules
RUN npm run build

FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/node_modules ./node_modules
EXPOSE 3000
CMD ["npm", "run", "start"]

docker build -t codenivra .
docker run --env-file .env.local -p 3000:3000 codenivra

version: "3.9"
services:
  app:
    build: .
    ports:
      - "3000:3000"
    env_file:
      - .env.local
  db:
    image: postgres:16
    environment:
      POSTGRES_USER: app
      POSTGRES_PASSWORD: app_password
      POSTGRES_DB: app_db
    ports:
      - "5432:5432"